| Project/Area Number |
24656488
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | The University of Tokyo (2013)
Yokohama National University (2012) |
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Principal Investigator |
WAKIHARA TORU 東京大学, 工学(系)研究科(研究院), 准教授 (70377109)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | ゼオライト / メカノケミカル / 触媒 / パラキシレン / 外表面 / 表面処理 |
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| Research Abstract |
The acid sites associated with the external surface of zeolite particles are responsible for undesirable consecutive reactions, such as isomerization, alkylation and oligomerization, resulting in a lower selectivity to a target product; therefore, the selective modification (deactivation) of the external surface of zeolite particles has been an important issue in zeolite science. Here, a new method for the surface deactivation of zeolite catalyst was tested via a mechanochemical approach using powder composer. Post-synthetic mechanochemical treatment of ZSM-5 zeolite causes a selective deactivation of catalytically active sites only existing on the external surface, giving a unique ZSM-5 zeolite catalyst without acid sites on the external surface, as a potentially useful catalyst for highly selective production of p-xylene.
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